Adjustable seat and back



1932- I P. CARLSON ADJUSTABLE SEAT AND BACK Filed Feb; 15, 1930 INVENTORP/n'l Car/Jon.

ORNEY Patented Nov. 22, 19 32 UNITED STATES PATENT OFFICE PHILIPCARLSON, on Long HiLL, coNNEc'rIcnr, ASSIGNOR, BY. MnsN ASSIGNMENTS, TOTHE BRIDGEPORT-CI'IY. TRUST COMPANY, or nnrnenroar, CONNECTICUT, A

CORPORATION or CONNECTICUT ADJUSTABLE same AND BACK Application filedFebruary 15, 1930. Serial No. 428,730.

This invention relates to new and useful improvements in adjustableseats and has particular relation to an adjustable seat for truck cabs.a 7

An object of theinvention is to provide a readily adustable seat for atruck cab, the

improved mechanism including means whereby the back rest associated withthe seat is automatically adjusted as the seat is adjusted. I Anotherobject of the invention is to provide an adjustable seat and back for atruck cab which seat and back comprise few parts, and ma be cheaply madeand easily and quickly installed. v Y

According to the present invention the back support is pivotally mountedat its upper end and the seat is mounted to be adjusted forwardly andrea-rwardly, the lower end of the back support being pivotally connectedwith the seat whereby as the seat is moved the angle of the backrelative to the seat will be varied while the seat remains in the sameplane in its various adjusted positions. a

Other objects and advantages will become apparent from a considerationof the following description taken in connection with the accompanyingdrawing.

In the accompanying drawing there. is shown and in the followingdetaileddescription there will be described one satisfactory embodiment of theinvention. However, it is to be understood that this disclosure is forthe purpose of making clear the construction and operation of one formof the invention and that the invention is not limited to the detailsshown, since changes within the scope of the appended claims willreadily suggest themselves to those skilled in the art. Therefore,reference must be had to the claims for a definition of the limitationsof the invention.

In the drawing:

Figurel is a front elevational view of the improved adjustable seat andback, part of the truck cab structure for mounting the same beingshownand the seat and back cushions being shown in dotted lines.

Fig. 2 is a sectional view on the line 2-2 tensions 1 '17 of the angleiron members 6 and 7 are of Fig. 1, ted lines;

F ig. 3 is a view somewhat similar to Fig. 2

but showing the seat and back in an adjusted position; and

.Fig. 418 a detail.

shown a pair of uprights usually employed in the construction of truckcabs forming part of the frame thereof. According to the presentinvention, these uprights or frame members 5, are utilized as a, meansto assist ingioliiinting my improved adjustable seat and ac I , As shownthe invention includes back supporting members 6 and 7 each consistingof a section of angle iron to which the back cushion 8 is secured byineans of upperand lowerhook like members; indicated at 9 and 10respectively. Theup' rights 5 are each equipped with a bearing plate 11and the back supporting members 6 and 7 are pivotally secured to theuprights 5 through the'medium of bolts 12 passing through the uprightsand bearing plates 11 and through one side of each of the cut away on anare as at 14 whereby as the seatand back are adjusted by swinging thememthe cushion being indicated in dot-' Referring in detail to thedrawing, at 5 is A members '6 and 7 The bolts 12 are secured bers 6 and7 on the bolts12 the ends of the members 6 and 7 will not project beyondthe rear surfaces of the uprights 5. a

= Thelower end of each of the back supporting angle iron members 6 and,7 1 has .one

side cut away as at 15 and the opposite side is laterall 'ofiset as at16. Inthis way ex- 7 are provided and these extensions perforated for apurpose to be described; The adjustable seat proper includes a shel lowtray 18 having its edges up-turned as at 19 to embrace the lower edgeportions of the I seat or cushion 20 the tray.

a For the purpose of securing "the tray 18 of the seat to the backsupporting members when the latter is within 6 and Z steel straps 21 areused. Intermediate their ends the straps 21 are given a half turn ortwist as, shown at 22 and have otherwise secured to the tray 18 as shownat r the studs 27 with the pair of the seat be raised to Also, it willbe apparent their forward portions riveted, bolted or 23. The rearportions of thestraps 21 are perforated and the straps are hingedly orpivotally secured to the perforated end of extensions 17 of the angleiron members 6 and 7 as by bolts 24.

As clearly shown the tray 18 rests upon a seat box but fragmentarilyshown in the drawing. This seat box at its upper edge includes aninturned flange 26 on which the tray 18 rests. Flange 26 at the forwardside of the seat box 25 carries a pair of spaced projections 27 whichmay be in the form of rivets as shown or in the form of bolts, it beingunderstood that these projections or stops 27 are rigid with the flange26. Projections 27 secure the seat and back in the desired position. InFig. 2 the seat and back are shown in full lines in the straight ornonadjus ted position. .Tray 18 is provided with two rows ofperforations 28 for co-operation with the projections 27.

In the operation of the device to effect the desired adjustment it isbut necessary that disengage the pro ection or studs 27 from the pair ofopenings 28 with which they happened and to thereafter pull the seatforwardly orpushit-rearwardly to align and engage openings 28 which willgive the desired adjustment. Also ready access may be had to the seatbox 25, in which tools or the like may be carried. Owing to theoflset at16 and the cut away 'at 15 on the lower end of the back supportingmembers 6 and 7, the rear ends of the steel straps 21 will not engagethe members 6 and 7 when the seat is swung upwardly on the pivot bolts24. i i

From the foregoing description, it will be apparent that I have providedan easily and quickly adjustable seat structure and one wherein the backis adjustable with the seat. that the adjustable seat and back of thepresent invention is inexpensive since it is so made as to be mounted onthe uprights 5 usually employed in cab construction and provides aconvenient means for mounting the back cushion 8 andthe seat cushion 20,for. which purpose some means must. be provided. Additionallyflt is tobe noted that the invention'utilizes the cushion carrying tray and theseat box as means for holding. the seat and back in adjusted position.

Having thus described my invention, what Iclaimis:

1. In'combination with a truck cab body including a pair of spaceduprights, a pair of vertically arranged back supporting members, meanspivotally connecting the back.

supporting members to the opposed faces of said spaced uprlghts, saidback sup orting members each'including a length 0 angle to be inengagement.

ironhaving one of' its sides against the upright to which itis pivotedwhereby its other side projects laterally of the upright, a back securedto said other sides of the back supporting members and extendingdownwardly from a point ad acent the1r upper ends, a

' sea-t member, straps pivoted at their rear ends to the lower ends ofthe back supporting members, said straps rigidly connected with securethe seat'member back supporting members located at the upper'ends ofsaid members whereby the upper portion of the back will not be'swungrearwardly as the seat is adjusted forwardly.

2. In combination with a truck cab body including a pair of spaced framebars, a pair of vertlcally arranged back supporting members, meanspivotally securing said members to said bars, said members eachincluding a length of angle iron having one of its sides facingforwardly of thebody, a back extending from a point adjacent the upperends of said members and supported on said sides,-a'- seat member, aseat box on which said seat member rests, a pair of straps pivotallyconnected at their rear ends with the lower ends of the back supportingmembers by bolts, sa d. straps at their nected with the seat memberwhereby as the seat member 'is' moved for adjustment the back. will alsobe adjusted, means to secure the seat member and thereby the back inadjusted positions, said back supporting mem-"' bers having their backsupporting sides cut away adjacent their lower ends to permit verticalmovement of the straps and thereby the seat member on the pivots betweenthe back and straps to permit access to be had to the interior of theseat pivotal connecting means between the back supporting members anding located at the upper ends of said members whereby theupper portionof the backis not swung rearwardly as the seat and back'are adjustedforwardly.

forward ends rigidly conbox, and said the frame bars be ned atBridgeport in the county of Fairfield, and State of donnecticut. I

, PHILIP CARLSON.

